Process of utilizing carboniferous colliery waste.



UNITED STATES PATENT OFFICE.

CLEMENS DORE, OE COLOGNE, GERMANY.

PROCESS OF UTILIZING CARBONIFEROUS COLLIERY WASTE.

SPECIFICATION forming part of Letters Patent N 0. 703,696, dated July 1, 1902.

Application filed August 25, 1900. Serial No. 28.018. (No specimens.)

To all whom it may concern.-

Beitknownthatl, CLEMENS DoRE,a subject of the German Emperor, residing at Cologne,

Empire of Germany, have invented certain new and useful Improvements in Processes of Utilizing Carboniferous Colliery Waste, of which the following is a specification.

The various branches of industry at the present time make increased requirements on the steam-producing capacity of coal. The quality of the latter should therefore be as purethat is to say, as free from ash-as possible.

The object of the present invention is to obtain and utilize to a good purpose all the hitherto unused and in the original form unusable combustibles, so to say, hidden in the waste heaps and the like of collieries. To efiect this, the Waste is granulated as finely as possible, (this is the principal part of the process,) coarse sandstone being separated from it, if necessary, and is then thoroughly mixed up in some cases With an admixture of coal-slime, coal-dust, or the like or of sawdust, peat, brown coal, and such like combustible matter. In a loose condition or after having been formed into cakes or blocks by some suitable process the material can be used as fuel for any purpose.

A special advantage revealed by experiments is that the fuel burns with an intense continuous flame. Owing to its high specific weight the ash residue is of relatively small volume. Coal or fuel produced by this process does not cake or form slag.

The value and importance of the invention become most obvious when the following comparison is made between the combustible value of the materials used in their original form and of the combustible produced by the new process. It is assumed that the material taken from the waste and rubble heaps has in its original form no practically utilizable combustible value, while for the coalslime a combustible value of ninety per cent. is fixed, although the latter also must be regarded as partly-valueless waste and partly Waste of slight value.

Combustible valuesof the materials used in their of the combustibles produced original form. by the present process.

64.10 p.c. C o ars e wash 0 p. c. C om b us tible 63.20 p.c. heap waste. value accord- 32.05p.c. S e p a r a ted 0 p. c. ing to analywaste. sis by Mining 3.85 p.c. Resin, combus- 3.85 p. c. L a b o r atory tible value, at Bochum. max. 100 p. 0.

100.00p.c. Combustible 3.85 p. e.

value.

Against this..- 3.85 p.c

C 0 mb u s t ible 59.35 p.c.

"alue gained.

80.40p.c. S e p a r a t e (1 013.0. Com bustible 83.60 p.c. waste. value accord- 11.76p.c. Coal slime, 10.58 p.c. ing to analy comb. value, sis by Mining max. 90 p. 0. Laboratory 3.92 p.c. Fine coal, com- 3.72 p.c. at Bochum.

bustible value, max. 95 p. c. 3.92p.c. Hard pitch, 3.92 p.c. comb. value, max. 100 p. c.

100.00p.c. Combustible 18.22 p.c.

value.

Against this.... 18.22 p.c.

C oinb us tible 65.38 p.c.

value gained.

61.00 p.c. Fine washheap O p.c. C o m b u s t ible 84.22. p.c. waste. value accord- 10.00p.c. C oars e Wash' 0 p.c. ing to analyheap Waste. sis b y D r 20.00p.c. Coal-slime, 18.001142. Karl Hohcomb. value, mamnof Diismax. 90 p. o. seldorf. 5.00p.c. Pure coal, 4.75 p.c. comb. value, max. 95 p. c. 2.00 p.c. Dextrin, comb. 2.00 p.c. value, max 100 p. c.

2.00110. Colophony. 2.00 p.c. comb. value, max. 100 p. c.

100.00p.c. Combustible 26.75 p e value.

Against this 26.75p.c.

C o mbu st ible 57.47p.c.

value gained.

By the present process, therefore, highly valuable and rich supplies of combustible matter which were hitherto regarded as los coal-dust, small coke and the like, as herein 10 are opened up and utilized. set forth.

Having now particularly described and as- In witness whereof I have hereunto set my certained the nature of the said invention and hand in presence of two witnesses. 5 in what manner the same is to be performed I declare that what Iclaim is CLEMENS DOBR- The method of utilizing carboniferous col- Vitnesses: liery waste consisting in finely grannlating KARL SCHMITT, such material, and adding thereto coal-slime, L. BARNES. 

